Hi, I got a 3 month old one that is only like weighing 3-4g at the moment. I was really worried bout it not picking up weight but eating well. My friend adviced me to give it live food nearly every night till its a bit fatter. So thats what I started doing. I put her in a seperate tub with crickets in it. So I know how much she has eaten as well. You can try that maybe it will help a bit. Only been doing it for a couple of weeks now and mine looks much better. It seems like she will just be a slim long crestie instead of a fatty.